Template Part: Replace flow for footer in TT3 shows very small preview

[annezazu]

Description

When replacing a footer template part using TT3, I noticed the template preview was basically nonexistent, making it both hard to see and hard to select.

Of note, the current header & footer patterns aren't visible right now and that's been reported here: #44843

Step-by-step reproduction instructions

1. Use 6.1 beta 3.
2. Activate TT3.
3. Head to Appearance > Site Editor.
4. Create a new footer. Save it.
5. Select the footer > Select the three dot menu > select "replace".
6. Notice the default TT3 footer is very tiny and hard to select/see.

Screenshots, screen recording, code snippet

Environment info

• WP 6.1-beta3-54428
• No GB
• TT3
• Chrome 106.0.5249.61

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[talldan]

It looks like the Footer in TT3 only has a pattern block within it:

<!-- wp:pattern {"slug":"twentytwentythree/footer-default"} /-->

So I think the problem is around showing patterns within pattern previews, which I remember there was another bug report for.

This is the one - #39732. The linked PR does fix it when I tested (Try nested patterns previews with block editor setting), so I think this can be considered a duplicate.

[annezazu]

Sweet! I trust your read there and will close this out.